Composite material car body underframe frame assembly tooling

Abstract

The application discloses a composite material vehicle body underframe frame assembling tool, which comprises two parallelly arranged side beam positioning and clamping modules and two traction pillow positioning and clamping modules, the traction pillow positioning and clamping modules are arranged between the side beam positioning and clamping modules and at longitudinal two ends; the side beam positioning and clamping module is provided with a longitudinal abutting part, a transverse abutting part and a vertical clamping part; in the mounting state, the longitudinal abutting part abuts against the longitudinal end wall of the frame, the vertical clamping part clamps the side beam of the frame along the vertical direction, and the transverse abutting part abuts against the outer side wall of the side beam; the tool further comprises a transverse supporting part, and two ends of the transverse supporting part are connected with the side beams on two sides. The tool adopts mechanical positioning instead of welding positioning mode and is suitable for assembling the composite material vehicle body underframe frame. In the assembling process, the transverse abutting part applies the abutting force to the side beam from outside to inside, the transverse supporting part applies the supporting force or pulling force along the transverse direction to the frame, deformation of the frame is prevented, and the assembling rigidity of the whole frame structure is ensured.

Description

Technical Field

[0001] This invention relates to the field of positioning and assembly technology, and more specifically to a composite material vehicle body chassis frame assembly tooling. Background Technology

[0002] With the accelerated construction of urban rail transit in China, the number of urban rail projects and production is increasing day by day. Lightweighting, cost reduction, and material functionalization of subway vehicles have become the trend in the selection of subway vehicle materials. Carbon fiber composite materials can reduce costs by reducing the amount of prepreg used and developing liquid injection molding technology for complex structural components. At the same time, more functions can be given to composite materials in the design, such as sound insulation, heat insulation, conductivity, electromagnetic shielding, and flame retardancy. Due to its light weight, the application of carbon fiber materials in the rail transit field has developed rapidly.

[0003] As a crucial process in carbon fiber vehicle body assembly, the chassis frame assembly plays a significant role in the chassis structure and vehicle body strength. Existing steel and aluminum welded structure vehicle body assembly positioning methods all involve marking and measuring before positioning and welding. Because the positioning welding and grinding processes are time-consuming and labor-intensive, and not suitable for composite materials such as carbon fiber, there is a need to provide a composite material vehicle body chassis frame assembly tooling that is suitable for the assembly of composite material vehicle body chassis frames, with a simple and feasible assembly process and high production efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a composite material vehicle body chassis frame assembly fixture, which is suitable for assembling composite material vehicle body chassis frames. The assembly process is simple and feasible, and the production efficiency is high.

[0005] To solve the above technical problems, the present invention provides a composite material vehicle body chassis frame assembly tooling, including two side beam positioning and clamping modules and two traction pillow positioning and clamping modules. The two side beam positioning and clamping modules are arranged in parallel with a preset distance between them. The traction pillow positioning and clamping modules are arranged between the two side beam positioning and clamping modules and are located at both ends of the longitudinal direction of the side beam positioning and clamping modules. The traction pillow positioning and clamping modules are used to position and clamp the traction beam and the pillow beam.

[0006] The side beam positioning and clamping module is provided with a longitudinal abutment part, multiple transverse abutment parts, and multiple vertical clamping parts. The multiple transverse abutment parts are distributed longitudinally, and the multiple vertical clamping parts are distributed longitudinally. In the installed state, the longitudinal abutment part abuts against the longitudinal end wall of the frame, the vertical clamping part clamps the side beam of the frame in the vertical direction, and the transverse abutment part abuts against the outer side wall of the side beam.

[0007] It also includes multiple transverse support parts, which extend laterally and are connected at both ends to the side beams on both sides. The multiple transverse support parts are distributed longitudinally.

[0008] Based on a thorough analysis of the composite material vehicle chassis frame design structure, interface dimensions, positioning references, and construction key points, this invention, through process planning and analysis, designs an assembly fixture suitable for weldless composite material vehicle chassis frames. Firstly, considering that traditional positioning welding methods are unsuitable for composite materials, this invention employs mechanical positioning instead. Specifically: for frame positioning, longitudinal positioning is achieved by the longitudinal abutment part abutting against the longitudinal end wall of the frame; vertical positioning and clamping are achieved by the vertical clamping part clamping the side beams of the frame along the vertical direction; and finally, mechanical positioning is achieved by the transverse abutment part and the outer side of the side beams. The wall abutment achieves lateral positioning of the frame, ensuring its stability during assembly. Positioning clamps are also used for the traction beams and bolster beams. By replacing welding with mechanical positioning, the underframe assembly process becomes simpler and more feasible, increasing production efficiency. Furthermore, it saves on manpower and material resources wasted on welding, reducing costs for welding wire, grinding tools, etc., thus achieving cost reduction and efficiency improvement. Compared to welding, bonding, and pre-riveting, it eliminates the need for permanent or semi-permanent connections between base materials and the removal of the connecting medium, improving the overall appearance quality of the vehicle body and enhancing its commercial image.

[0009] Meanwhile, in practice, it was found that due to the long length of the vehicle body frame, the composite material vehicle body frame would deform during assembly compared to the traditional metal vehicle body frame. Therefore, the multiple transverse abutment parts distributed longitudinally along the side beam positioning and clamping module 1 can not only play a role in the transverse positioning of the frame, but also apply abutment force to the side beam of the frame from the outside to the inside to prevent the frame from deforming. Furthermore, the two ends of the transverse support parts are connected to the side beams on both sides, and the multiple transverse support parts are distributed along the length direction of the side beam positioning and clamping module, which can apply transverse support force or tensile force to the frame, solve the problem of vehicle body frame deformation, and ensure the assembly rigidity of the entire frame structure.

[0010] Optionally, the side beam positioning and clamping module includes a positioning and clamping seat, the positioning and clamping seat includes a clamping seat body, the top of the clamping seat body is provided with a notch, the bottom wall forming the notch is used to support the side beam, and the side wall forming the notch is the lateral abutment part;

[0011] The positioning clamping seat also includes a clamping rod, which is installed on the clamping seat body and located above the notch. The installation position of the clamping rod is adjustable in the vertical direction, and the bottom wall of the notch and the clamping rod together form the vertical clamping part.

[0012] Optionally, the side beam positioning and clamping module further includes a base, and the longitudinal abutment part and the positioning clamping seat are both installed on the base. The installation positions of the longitudinal abutment part and the positioning clamping seat are both adjustable along the longitudinal direction.

[0013] Optionally, the side beam positioning and clamping module further includes an adjusting component, which includes an adjusting plate, at least two adjusting blocks, and a connecting member. The adjusting blocks are connected to the bottom wall of the adjusting plate through corresponding connecting members. At least one adjusting block is provided on both sides of the adjusting plate in the width direction. The inner ends of the adjusting blocks are provided with opposite notches. The base has a connecting plate, and the adjusting plate is supported on the connecting plate. The connecting plate is inserted into the notch. The relative position of the adjusting plate and the adjusting blocks is adjustable to clamp or loosen the connecting plate. The longitudinal abutment part or the positioning clamping seat is correspondingly installed on the adjusting plate.

[0014] Optionally, the distance between the two side beam positioning and clamping modules is adjustable, and the two side beam positioning and clamping modules can be relatively fixed when adjusted to a preset distance, and the length of the transverse support is adjustable.

[0015] Optionally, it also includes a propulsion device, each of the side beam positioning and clamping modules corresponding to one or more sets of the propulsion devices, the sets of the propulsion devices being distributed longitudinally, the propulsion devices being used to push the side beam positioning and clamping module to move laterally.

[0016] Optionally, it also includes guide components, each of the side beam positioning and clamping modules corresponding to one or more sets of guide components. The guide components have mutually cooperating guide portions and guide blocks. The guide portions extend laterally, and the guide blocks are movable along the extension direction of the guide portions. One of the guide portions and the guide blocks is fixed to the ground, and the other is connected to the side beam positioning and clamping module.

[0017] Optionally, the traction pillow positioning and clamping module includes a traction beam positioning and clamping module and a pillow beam positioning and clamping module. Both the traction beam positioning and clamping module and the pillow beam positioning and clamping module include a support part and a clamping part. The support part is used to support the traction beam or the pillow beam. The position of the clamping part is adjustable in the vertical direction and is used to clamp the top wall of the traction beam or the pillow beam, or to loosen the top wall of the traction beam or the pillow beam.

[0018] Optionally, it also includes a traction mechanism, which is correspondingly connected to the traction beam positioning and clamping module. The traction mechanism is used to drive the traction beam positioning and clamping module to move laterally to adjust the distance between the two traction beam positioning and clamping modules.

[0019] Optionally, the support height of the traction beam positioning and clamping module is adjustable, and the support height of the bolster beam positioning and clamping module is adjustable.

[0020] Optionally, it also includes a lateral centerline positioning module and a longitudinal centerline positioning module, wherein:

[0021] The transverse centerline positioning module includes two first positioning marks, which are disposed on the transverse outer side of the two side beam positioning and clamping modules for positioning the longitudinal center of the fixture.

[0022] The longitudinal centerline positioning module includes two second positioning marks, which are disposed between the two side beam positioning and clamping modules at both ends in the longitudinal direction for positioning the transverse center of the fixture. It also includes a connecting line, which is tensioned and connected between the two second positioning marks. Attached Figure Description

[0023] Figure 1 A schematic diagram of a specific embodiment of the composite material vehicle body chassis frame assembly tooling provided by the present invention;

[0024] Figure 2 for Figure 1 Schematic diagram of the second angle of the composite material vehicle body chassis frame assembly tooling;

[0025] Figure 3 for Figure 1 A schematic diagram of the composite material vehicle body chassis frame assembly tooling in the assembly state;

[0026] Figure 4 for Figure 3 Schematic diagram of the second angle of the composite material vehicle body chassis frame assembly tooling;

[0027] Figure 5 for Figure 3 Schematic diagram of the third angle of the composite material vehicle body chassis frame assembly tooling;

[0028] Figure 6 for Figure 1 Diagram showing the installation position of the transverse support in the composite material vehicle body chassis frame assembly tooling;

[0029] Figure 7 for Figure 1 A schematic diagram of the positioning clamping seat in the assembly tooling for composite material vehicle body chassis frame;

[0030] Figure 8 for Figure 1 A schematic diagram of the longitudinal contact section in the composite material vehicle body chassis frame assembly tooling;

[0031] Figure 9 for Figure 8 A structural schematic diagram of the longitudinal abutment section from another angle;

[0032] Figure 10 for Figure 1 Schematic diagram of the guide components in the composite material vehicle body underframe assembly tooling;

[0033] Figure 11 for Figure 1 A schematic diagram of the traction beam positioning and clamping module in the composite material vehicle body underframe assembly tooling;

[0034] Figure 12 for Figure 1 A schematic diagram of the bolster beam positioning and clamping module in the composite material vehicle body underframe assembly tooling;

[0035] in, Figures 1-12 The annotations in the accompanying drawings are explained as follows:

[0036] 1-Side beam positioning and clamping module; 11-Longitudinal abutment part; 111-Fixed seat; 112-Connecting arm; 112a-Abutment wall; 113-Flexible gasket; 12-Positioning clamping seat; 121-Clamping seat body; 121a-Notch; 122-Pressure rod; 123-Gasket; 124-Connecting rod; 13-Base; 131-U-shaped beam; 132-Connecting plate; 14-Adjusting plate; 15-Adjusting block; 16-Connecting piece;

[0037] 2-Traction pillow positioning and clamping module; 21-Traction beam positioning and clamping module; 22-Pillow beam positioning and clamping module; 2a-Support part; 2b-Clamping part;

[0038] 3- Lateral support section;

[0039] 4-Propulsion device;

[0040] 5-Guide component; 51-Guide part; 52-Guide block; 53-Base plate; 54-Fixing plate; 55-Support block; 56-Limiting part; 561-Limiting seat; 562-Adjusting bolt;

[0041] 6-First positioning mark;

[0042] 7-Second positioning mark;

[0043] 01-Traction beam; 02-Sleeper beam; 03-Frame; 031-Side beam. Detailed Implementation

[0044] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] The term "multiple" as used in this article usually refers to two or more components; and when "multiple" is used to indicate the quantity of certain components, it does not indicate the relationship between these components in terms of quantity.

[0046] In this article, the extension direction of the side beam positioning and clamping module 1 is "longitudinal", and the direction perpendicular to the extension direction of the side beam positioning and clamping module 1 in the horizontal plane is "lateral".

[0047] In this article, the direction closer to the middle of the two side beam positioning and clamping modules 1 is called the "inner side", and the direction farther away from the middle of the two side beam positioning and clamping modules 1 is called the "outer side".

[0048] Please refer to Figures 1-5 , Figure 1 A schematic diagram of a specific embodiment of the composite material vehicle body chassis frame assembly tooling provided by the present invention; Figure 2 for Figure 1 Schematic diagram of the second angle of the composite material vehicle body chassis frame assembly tooling; Figure 3 for Figure 1 A schematic diagram of the composite material vehicle body chassis frame assembly tooling in the assembly state; Figure 4 for Figure 3 Schematic diagram of the second angle of the composite material vehicle body chassis frame assembly tooling; Figure 5 for Figure 3 A schematic diagram of the third angle of the composite material vehicle body chassis frame assembly tooling.

[0049] This invention discloses a composite material vehicle body chassis frame assembly tooling, including two side beam positioning and clamping modules 1 and two traction pillow positioning and clamping modules 2. The two side beam positioning and clamping modules 1 are arranged in parallel with a preset distance between them. The traction pillow positioning and clamping modules 2 are arranged between the two side beam positioning and clamping modules 1 and are located at both longitudinal ends of the side beam positioning and clamping modules 1. The traction pillow positioning and clamping modules 2 are used to clamp the traction beam 01 and the pillow beam 02.

[0050] The side beam positioning and clamping module 1 is provided with a longitudinal abutment part 11, multiple transverse abutment parts, and multiple vertical clamping parts. The multiple transverse abutment parts are distributed longitudinally, and the multiple vertical clamping parts are distributed longitudinally. In the installed state, the longitudinal abutment part 11 abuts against the longitudinal end wall of the frame 03, the vertical clamping parts clamp the side beam 031 of the frame 03 in the vertical direction, and the transverse abutment parts abut against the outer side wall of the side beam 031.

[0051] It also includes multiple transverse support parts 3, which extend laterally and are connected at both ends to the side beams 031 on both sides. The multiple transverse support parts 3 are distributed along the length direction of the side beam positioning and clamping module 1.

[0052] Based on a thorough analysis of the composite material vehicle chassis frame design structure, interface dimensions, positioning references, and construction key points, this invention designs an assembly fixture suitable for weldless composite material vehicle chassis frames through process planning and analysis. Firstly, considering that traditional positioning welding methods are not suitable for composite materials, this invention uses mechanical positioning instead. Specifically: for the positioning of frame 03, the longitudinal abutment part 11 abuts against the longitudinal end wall of frame 03 to achieve longitudinal positioning of frame 03; the vertical clamping part clamps the side beam 031 of frame 03 in the vertical direction to achieve vertical positioning and compression of frame 03; and the transverse abutment part and side beam 031... The outer wall of 31 abuts against the frame 03 to achieve lateral positioning and ensure the stability of the frame 03 during assembly. The traction beam 01 and the bolster beam 02 are also positioned by positioning clamping. Since mechanical positioning is used instead of positioning welding, on the one hand, the assembly process of the underframe is simple and feasible, and the production efficiency is improved. On the other hand, it saves the manpower and material resources wasted by positioning welding, reduces the cost of welding wire, grinding tools, etc., and achieves cost reduction and efficiency improvement. At the same time, compared with positioning welding, bonding, pre-riveting and other positioning methods, there is no need to make permanent or semi-permanent connections between the base materials and remove the connecting medium, which improves the overall appearance quality of the vehicle body and thus improves the commercial image of the vehicle body product.

[0053] Meanwhile, in practice, it was found that due to the long length of the vehicle body frame, the composite material vehicle body frame will deform during the assembly process compared to the traditional metal material vehicle body frame. Therefore, the multiple transverse abutment parts distributed longitudinally along the side beam positioning and clamping module 1 can not only play the role of transverse positioning of the frame 03, but also apply abutment force to the side beam 031 of the frame 03 from the outside to the inside to prevent the frame 03 from deforming. Furthermore, the two ends of the transverse support part 3 are connected to the side beams 031 on both sides. The multiple transverse support parts 3 are distributed along the length direction of the side beam positioning and clamping module 1, which can apply transverse support force or tension to the frame 03, solve the problem of vehicle body frame deformation, and ensure the assembly rigidity of the entire frame 03 structure.

[0054] Please refer to Figure 1 and Figure 6 , Figure 6 for Figure 1 Diagram showing the installation position of the transverse support in the composite material vehicle body chassis frame assembly tooling.

[0055] In this embodiment, there are eight transverse support parts 3. The two ends of the transverse support parts 3 are connected to the hanging mounting seats on the inner side of the side beam 031 by bolts. There is no need to set a separate connection structure on the side beam 031, thus avoiding any impact on the structure of the frame 03.

[0056] In practical applications, the transverse support 3 is required to provide a support force or tensile force of not less than 20KN to ensure the assembly rigidity of the entire base frame structure.

[0057] In addition, the materials used for the vehicle's chassis frame include, but are not limited to, carbon fiber composite materials.

[0058] Please continue to refer to this. Figures 1-5 In this embodiment, the side beam positioning and clamping module 1 also includes a base 13. The base 13 serves as the main strength component of the base frame assembly tooling and forms the mounting base for the longitudinal abutment part 11, the transverse abutment part, and the vertical clamping part. The longitudinal abutment part 11, the transverse abutment part, and the vertical clamping part are all mounted on the base 13.

[0059] In this embodiment, the base 13 is 24000mm long. The lower part of the base 13 is made of a bevel beam 131 with a wall thickness of 12mm and a square structure with a cross-section of 200mm×300mm. The upper part of the bevel beam 131 is welded with a connecting plate 132 with a thickness of not less than 18mm. The connecting plate 132 is machined along its entire length, and the flatness requirement is ≤2mm along its entire length. The height of the positioning clamping seat 12 is 650~750mm.

[0060] Please refer to Figures 7-8 , Figure 7 for Figure 1 A schematic diagram of the longitudinal contact section in the composite material vehicle body chassis frame assembly tooling; Figure 8 for Figure 7 A structural diagram of the longitudinal abutment part from another angle.

[0061] In this embodiment, the longitudinal abutment portion 11 includes a fixing seat 111 and a connecting arm 112 disposed on the fixing seat 111. The fixing seat 111 can be fixed to the base 13. The connecting arm 112 has an abutment wall 112a extending laterally and also includes a flexible gasket 113. The flexible gasket 113 is fixed to at least a portion of the abutment wall 112a. During assembly, the flexible gasket 113 abuts against the longitudinal end wall of the frame 03 to reduce noise and avoid damage to the structure of the frame 03.

[0062] The flexible gasket 113 is made of materials including, but not limited to, nylon.

[0063] Furthermore, in order to meet the assembly requirements of different sized base frames, the installation position of the longitudinal abutment part 11 is adjustable along the longitudinal direction. For example, in this embodiment, the side beam positioning and clamping module 1 also includes an adjustment component, which includes an adjustment plate 14, four adjustment blocks 15, and a connector 16. The adjustment blocks 15 are connected to the bottom wall of the adjustment plate 14 through the corresponding connector 16. Two adjustment blocks 15 are respectively provided on both sides of the width direction of the adjustment plate 14. The inner ends of the adjustment blocks 15 are provided with notches and grooves. The connecting plate 132 in the base 13 is inserted into the notch and groove. By adjusting the connector 16, the relative position of the plate 14 and the adjustment blocks 15 can be adjusted so that the adjustment plate 14 and the adjustment blocks 15 clamp or release the connecting plate 132, thereby locking or unlocking the longitudinal abutment part 11.

[0064] Specifically: when it is necessary to adjust the position of the longitudinal abutment part 11, the connector 16 can be adjusted so that the adjusting plate 14 and the adjusting block 15 loosen the connecting plate 132 of the base 13. At this time, the longitudinal abutment part 11 can be slid to the desired position. When the longitudinal abutment part 11 is in the desired position, the connector 16 can be adjusted so that the adjusting plate 14 and the adjusting block 15 clamp the connecting plate 132 of the base 13, thereby locking the position of the longitudinal abutment part 11.

[0065] It is understood that there is no limit to the number of adjusting blocks 15. There can be more than two adjusting blocks 15. At least one adjusting block 15 is provided on each side of the adjusting plate 14 in the width direction.

[0066] Of course, in practical applications, the fixing seat 111 to the base 13 is not limited to the above-described embodiments. For example, the connecting plate 132 in the base 13 may have multiple sets of protrusions distributed longitudinally. Each protrusion may have a connecting hole, and the fixing seat 111 in the longitudinal abutment portion 11 may have a corresponding connecting hole for the connecting component to pass through. The longitudinal abutment portion 11 can be fixed to different protrusions to achieve longitudinally adjustable fixing position of the longitudinal abutment portion 11. In this case, the position of the protrusions can be adaptively designed according to the required dimensions of the vehicle chassis frame to be assembled.

[0067] Depend on Figure 1 As can be seen, in this embodiment, the longitudinal abutment portion 11 is disposed at one end of the frame 03. In practical applications, it is also feasible to simultaneously dispose of the longitudinal abutment portion 11 at both ends of the frame 03.

[0068] Please refer to Figure 9 , Figure 7 for Figure 9 A schematic diagram of the positioning clamping seat in the assembly tooling for composite material vehicle body chassis frame.

[0069] In this embodiment, the side beam positioning and clamping module 1 includes a positioning and clamping seat 12, which includes a clamping seat body 121. The top of the clamping seat body 121 is provided with a notch 121a. The bottom wall forming the notch 121a is used to support the side beam 031. The side wall forming the notch 121a forms the aforementioned transverse abutment part. In the installed state, the side beam 031 is located in the notch 121a.

[0070] The positioning clamping seat 12 also includes a clamping rod 122, which is installed on the clamping seat body 121 and located above the notch 121a. The installation position of the clamping rod 122 is adjustable in the vertical direction, so that the clamping rod 122 can be relatively close to press the top wall of the side beam 031 to achieve vertical positioning and clamping of the frame 03; or the clamping rod 122 can also be relatively far away to relax the top wall of the side beam 031, forming the bottom wall of the notch 121a and the clamping rod 122, which together form the aforementioned vertical clamping part.

[0071] Among them, by Figure 9 As can be seen, in this embodiment, both the sidewall and bottom wall forming the notch 121a are provided with gaskets 123. The material of the gaskets 123 includes, but is not limited to, nylon, which serves to reduce noise and protect the side beam 031 from damage.

[0072] The installation position of the clamping rod 122 is adjustable in the vertical direction and can be implemented in various ways. Specifically, in this embodiment, the positioning clamping seat 12 also includes a connecting rod 124. The connecting rod 124 is approximately L-shaped. The first end of the connecting rod 124 is fixed to the clamping seat body 121, and the second end extends above the notch 121a. The second end of the connecting rod 124 is provided with a threaded connection hole extending in the vertical direction. The peripheral wall of the clamping rod 122 is provided with a matching external thread. The clamping rod 122 passes through the threaded connection hole and is threaded.

[0073] Thus, when it is necessary to press the edge beam 031 longitudinally, the pressing rod 122 can be turned, and the pressing rod 122 gradually moves downward until it presses the top wall of the edge beam 031; when it is necessary to loosen the edge beam 031 longitudinally, the pressing rod 122 can be turned in the opposite direction, and the pressing rod 122 gradually moves upward away from the top wall of the edge beam 031.

[0074] The connecting rod 124 can be integrally formed or it can be a separate structure that is then fixed together. In this embodiment, the connecting rod 124 includes a vertical extension and a horizontal extension. The lower end of the vertical extension is fixed to the clamping seat body 121, and the upper end of the vertical extension is provided with an external thread. The first end of the horizontal extension is provided with a threaded connection hole, and the first end of the horizontal extension is threaded to the upper end of the vertical extension. The second end of the horizontal extension is used to connect to the clamping rod 122.

[0075] To make it easier to turn the clamping rod 122, a handle is provided at the upper end of the clamping rod 122. The handle can be used as a force-applying component for easy operation.

[0076] The clamping seat body 121 includes a first plate and a second plate that are connected to each other. The first plate extends horizontally and is fixedly connected to the base 13. The second plate extends vertically, and a notch 121a is formed in the second plate. The clamping rod 122 is also fixed to the second plate. A weight-reducing hole is also provided in the middle of the second plate to reduce weight. The clamping seat body 121 also includes a reinforcing plate, which is disposed between the first plate and the second plate to improve the connection stability between the two and thus improve the structural strength of the clamping seat body 121.

[0077] As described above, this embodiment integrates the transverse abutment and the vertical clamping part into one unit, which facilitates processing and makes installation on the base 13 more convenient. Of course, in practical applications, the transverse abutment and the vertical clamping part can be set separately and installed on the base 13 independently. For example, the side beam positioning clamping module 1 includes multiple abutment plates extending longitudinally. The multiple abutment plates are distributed longitudinally, and the inner sidewall of the abutment plate forms a transverse abutment wall for abutting against the outer sidewall of the side beam 031. The abutment plate is the aforementioned transverse abutment part. The side beam positioning clamping module 1 also includes multiple positioning clamping seats, which are distributed longitudinally. The positioning clamping seat specifically includes a support seat and a clamping rod connected to the support seat. The support seat has a horizontal support wall for supporting the side beam 031. The clamping rod is located directly above the support seat and can move vertically to press or release the top wall of the side beam 031. This positioning clamping seat is the aforementioned vertical clamping part.

[0078] In addition, in order to meet the assembly requirements of different sized base frames, in this embodiment, the installation position of the positioning clamping seat 12 is also set to be adjustable along the longitudinal direction. The adjustment method of the positioning clamping seat 12 is the same as the adjustment method of the longitudinal abutment part 11, and the position adjustment is also achieved by the aforementioned adjustment component. The positioning clamping seat 12 is installed on the adjustment plate 14.

[0079] Thus, by adjusting the connector 16, the connection state between the adjusting plate 14 and the adjusting block 15 can be changed, thereby locking or unlocking the positioning clamping seat 12. Specifically, when it is necessary to adjust the position of the positioning clamping seat 12, the connector 16 can be adjusted so that the adjusting plate 14 and the adjusting block 15 loosen the connecting plate 132 of the base 13. At this time, the positioning clamping seat 12 can be slid to the desired position. When the positioning clamping seat 12 is in the desired position, the connector 16 can be adjusted so that the adjusting plate 14 and the adjusting block 15 clamp the connecting plate 132 of the base 13, thereby locking the position of the positioning clamping seat 12.

[0080] Furthermore, in this embodiment, the distance between the two side beam positioning and clamping modules 1 is also set to be adjustable, and the two side beam positioning and clamping modules 1 can be relatively fixed when adjusted to a preset distance, and the length of the transverse support 3 is adjustable.

[0081] As set above, the distance between the two side beam positioning and clamping modules 1 can be adaptively adjusted according to the width of the base frame, and the two side beam positioning and clamping modules 1 can be relatively fixed when adjusted to the preset distance to ensure the clamping stability of the base frame and facilitate subsequent assembly steps. The transverse support part 3 is adjusted to an appropriate length to provide transverse support force or tension to ensure the assembly rigidity of the entire base frame structure, meet the installation requirements of base frames of different sizes, and has a wider range of applications and greater practicality.

[0082] In practical applications, the maximum adjustment distance between the two side beam positioning and clamping modules 1 should not be less than 3500mm.

[0083] Specifically, such as Figure 1 As shown, in this embodiment, the assembly fixture also includes a propulsion device 4. Each side beam positioning and clamping module 1 corresponds to one or more sets of propulsion devices 4. The multiple sets of propulsion devices 4 are distributed longitudinally. The propulsion device 4 has an output shaft that extends laterally and is connected to the side beam positioning and clamping module 1.

[0084] Thus, the side beam positioning and clamping module 1 can be moved laterally by the propulsion device 4. For example, when the output shaft of the propulsion device 4 extends, it can push the two side beam positioning and clamping modules 1 closer to each other, and the distance between them gradually decreases. When the output shaft of the propulsion device 4 retracts, it can push the two side beam positioning and clamping modules 1 further away from each other, and the distance between them gradually increases. When the output shaft is held in the current position, the side beam positioning and clamping module 1 is held in the current position, and the distance between the two side beam positioning and clamping modules 1 is relatively fixed.

[0085] Among them, the propulsion device 4 can be a hydraulic cylinder / pneumatic cylinder / electric cylinder, etc. The cylinder diameter should be no less than 63mm and the stroke should be no less than 350mm to ensure the stability and reliability of the system and meet the requirement of adjustable single-sided propulsion force from 10KN to 50KN. The entire structure must meet the support strength under the working condition of 50KN propulsion force.

[0086] Furthermore, to ensure the stability of the side beam positioning and clamping module 1 during movement, all propulsion devices 4 should advance synchronously. In practical applications, a controller can also be installed, electrically connected to each propulsion device 4, to achieve unified control of all propulsion devices 4.

[0087] In this embodiment, the propulsion device 4 adopts a hydraulic propulsion device and is equipped with a hydraulic station system to control each hydraulic propulsion device. The pressure adjustment range of the hydraulic station system is 1.0MPa-16MPa.

[0088] In this embodiment, each side beam positioning and clamping module 1 corresponds to four sets of propulsion devices 4. In practical applications, the number of propulsion devices 4 is not limited, as long as the propulsion devices 4 generate sufficient propulsion force.

[0089] Please refer to Figure 10 , Figure 10 for Figure 1 A schematic diagram of the guide components in the assembly tooling for composite material vehicle body chassis frames.

[0090] Furthermore, in this application, the assembly tooling also includes guide components 5. Each side beam positioning and clamping module 1 corresponds to one or more sets of guide components 5. The guide component 5 has a guide portion 51 and a guide block 52 that cooperate with each other. The guide portion 51 extends laterally, and the guide block 52 can move along the extension direction of the guide portion 51. One of the guide portion 51 and the guide block 52 is fixed to the ground, and the other is connected to the side beam positioning and clamping module 1.

[0091] Thus, the guide component 5 can guide the side beam positioning and clamping module 1, ensuring that the side beam positioning and clamping module 1 can only move laterally without deviation, thereby further improving the stability of the side beam positioning and clamping module 1 during movement.

[0092] Specifically, in this embodiment, the guide part 51 is a slide rail extending laterally, the guide block 52 is a slider installed on the slide rail, the slider can move along the extension direction of the slide rail, the slide rail is fixed to the ground, and the slider is connected to the bottom wall of the side beam positioning and clamping module 1.

[0093] The method of fixing the slide rail to the ground is not limited. For example, the guide component 5 also includes a base plate 53, the slide rail is fixed to the base plate 53, the base plate 53 has protrusions on both sides in the width direction, the protrusions have connecting holes, the ground has corresponding threaded connecting holes, and also includes bolts, screws and other connecting parts. The connecting parts pass through the connecting holes one by one and connect with the threaded connecting holes to achieve the fixing of the slide rail.

[0094] Similarly, there are no restrictions on how the slider is connected to the bottom wall of the side beam positioning clamping module 1. For example, two fixing plates 54 can be set opposite to the side wall of the slider facing away from the slide rail. The distance between the two fixing plates 54 matches the width of the side beam positioning clamping module 1. A support block 55 is also set between the two fixing plates 54 and the side wall of the slider facing away from the slide rail. In the installed state, the side beam positioning clamping module 1 is supported by the support block 55 and located between the two fixing plates 54. The fixing plates 54 and the corresponding side walls in the width direction of the side beam positioning clamping module 1 are fixed.

[0095] Furthermore, such as Figure 7 As shown, limit parts 56 are also provided on the base plate 53 and at both ends of the slide rail. The limit parts 56 limit the slider, so that the slider can only move between the two limit parts 56, preventing the slider from separating from the slide rail.

[0096] The limiting part 56 includes a limiting seat 561 and an adjusting bolt 562 connected to the limiting seat 561. The adjusting bolt 562 is arranged along the extension direction of the slide rail, and the end of the adjusting bolt 562 facing the slide rail forms a limiting wall, which abuts against the corresponding end wall of the slider to limit its movement. It can be understood that by changing the position of the adjusting bolt 562 connected to the limiting seat 561, the range of movement of the slider can be adjusted.

[0097] In practical applications, it is also feasible to connect the slide rail to the bottom wall of the side beam positioning and clamping module 1, and fix the slider to the ground.

[0098] Furthermore, the guide component 5 is not limited to the above-mentioned slide rail slider structure. For example, the guide part can be a guide groove that extends laterally, the guide block can be a T-shaped structure, the guide block part is inserted into the guide groove, and can move along the extension direction of the guide groove.

[0099] For further information, please continue to refer to [link / reference]. Figure 3 The length of the transverse support 3 is adjustable and can be implemented in various ways. For example, the transverse support 3 includes a connecting sleeve located in the middle, with internal threads on the inner wall of the connecting sleeve, and connecting columns located at both ends, with external threads on the peripheral walls of the connecting columns. The connecting columns are at least partially screwed into the connecting sleeve and threadedly connected to it. The end of the connecting column away from the connecting sleeve is connected to the side beam positioning and clamping module 1. When the distance between the two side beam positioning and clamping modules 1 needs to be adjusted, the connecting columns can be screwed in. When the connecting columns gradually retract inward, the length of the transverse support 3 shortens; when the connecting columns gradually extend outward, the length of the transverse support 3 lengthens.

[0100] Alternatively, the transverse support 3 may include a connecting sleeve and a connecting column. The inner wall of the connecting sleeve is provided with an internal thread, and the outer wall of the connecting column is provided with an external thread. The connecting column is screwed into the inside of the connecting sleeve, and the connecting column and the connecting sleeve are threadedly connected. The free end of the connecting sleeve is connected to one of the side beam positioning and clamping modules 1, and the free end of the connecting column is connected to the other side beam positioning and clamping module 1. By turning the connecting column or the connecting sleeve, the length of the overlapping part of the two can be adjusted, thereby changing the length of the transverse support 3.

[0101] Please refer to Figure 1 , Figures 11-12 , Figure 11 for Figure 1A schematic diagram of the traction beam positioning and clamping module in the composite material vehicle body underframe assembly tooling; Figure 12 for Figure 1 A schematic diagram of the bolster beam positioning and clamping module in the composite material vehicle body underframe assembly tooling.

[0102] In the composite material vehicle chassis frame assembly tooling of the present invention, the traction headrest positioning and clamping module 2 includes a traction beam positioning and clamping module 21 and a headrest beam positioning and clamping module 22. Both the traction beam positioning and clamping module 21 and the headrest beam positioning and clamping module 22 include a support part 2a and a clamping part 2b. The support part 2a is used to support the traction beam 01 or the headrest beam 02. The position of the clamping part 2b is adjustable in the vertical direction and is used to clamp the top wall of the traction beam 01 or the headrest beam 02, or to loosen the top wall of the traction beam 01 or the headrest beam 02.

[0103] Thus, by adopting the structural form of support part 2a and pressing part 2b, the mechanical positioning of traction beam 01 and pillow beam 02 is achieved. The assembly process is simple and feasible, and the production efficiency is high.

[0104] Among them, such as Figure 10 and Figure 11 As shown, in both the traction beam positioning and clamping module 21 and the sleeper beam positioning and clamping module 22, there are four clamping parts 2b, and the pressure of a single clamping part 2b is not less than 20KN. In practical applications, the number of clamping parts 2b is not limited, as long as the pressing stability of the traction beam 01 can be guaranteed.

[0105] Furthermore, in this embodiment, the centerline distance between the two bolster beam positioning and clamping modules 22 is (12600±1) mm. In practical applications, the positions of the two bolster beam positioning and clamping modules 22 are set to be adjustable in the lateral direction to adjust the distance between the two traction beam positioning and clamping modules 21.

[0106] Specifically, it also includes a traction mechanism, which is connected to the traction beam positioning and clamping module 21 and is used to drive the traction beam positioning and clamping module 21 to move laterally. The specific implementation of the traction mechanism is not limited; for example, the traction mechanism can be in the form of a hand-operated hoist. The traction beam positioning and clamping module 21 has a connection point, and the chain of the hand-operated hoist extends laterally and connects to this connection point. The hand-operated hoist can apply a lateral traction force to the traction beam positioning and clamping module 21 to drag it to move laterally.

[0107] Furthermore, in this embodiment, the difference between the support height of the bolster beam 02 and the support height of the side beam 031 is (43±0.5) mm, and the support height of the traction beam 01 is approximately the same as that of the side beam 031. In practical applications, the support heights of both the bolster beam 02 and the traction beam 01 are set to be adjustable.

[0108] The specific adjustment method is not limited. For example, a hydraulic cylinder / pneumatic cylinder drive unit is set at the bottom of the support part 2a. The cylinder body of the hydraulic cylinder / pneumatic cylinder is fixed to the ground. The output rod of the hydraulic cylinder / pneumatic cylinder extends vertically and is connected to the support part 2a. The extension or retraction of the output rod of the hydraulic cylinder / pneumatic cylinder can drive the support part 2a to move in the vertical direction, so as to change the support height of the bolster beam 02 or the traction beam 01.

[0109] The support height of the traction beam 01 and the bolster beam 02 is adjustable, and mechanical adjustment can also be used. For example, the support part 2a includes a support base and multiple support rods threaded to the support base. The support rods are used to support the bolster beam 02 or the traction beam 01. By turning the support rods to adjust the connection position of the support rods, the support height of the traction beam 01 and the bolster beam 02 can be changed.

[0110] Furthermore, the position of the clamping part 2b is adjustable in the vertical direction and can be implemented in various ways. For example, the clamping part 2b includes a clamping seat body and a clamping column. The clamping seat body is fixed relative to the support part 2a. The clamping column extends in the vertical direction and is threaded to the clamping seat body. When the clamping column is turned so that it moves vertically downward, the clamping column can clamp the top wall of the traction beam 01 or the bolster beam 02 to achieve clamping and positioning of the traction beam 01 or the bolster beam 02. When the clamping column is turned in the opposite direction so that it moves vertically upward, the clamping column can relax the top wall of the traction beam 01 or the bolster beam 02.

[0111] Alternatively, the clamping part 2b can also be a hydraulic cylinder / pneumatic cylinder or the like as the driving mechanism. The output shaft of the hydraulic cylinder / pneumatic cylinder extends vertically. The clamping part 2b also includes a pressure plate that extends horizontally and is connected to the free end of the output shaft. When the output shaft extends or retracts, it can drive the pressure plate to move vertically. Specifically, when the output shaft retracts and drives the pressure plate to move vertically downward, the pressure plate can press against the top wall of the traction beam 01 or the bolster beam 02 to achieve the clamping and positioning of the traction beam 01 or the bolster beam 02. When the output shaft extends and drives the pressure plate to move vertically upward, the pressure plate releases the top wall of the traction beam 01 or the bolster beam 02.

[0112] In summary, this invention has a high level of flexibility and can be compatible with the assembly and production of multiple projects and various urban rail and metro platform underframes with different sleeper spacing and widths, saving on the cost of new manufacturing and modification of process equipment.

[0113] Please continue to refer to this. Figure 1 The composite material vehicle body chassis frame assembly tooling of the present invention further includes a transverse centerline positioning module and a longitudinal centerline positioning module, wherein:

[0114] The transverse centerline positioning module includes two first positioning marks 6, which are set on the transverse outer side of the two side beam positioning clamping modules 1 and are used to position the longitudinal center of the frame 03.

[0115] The longitudinal centerline positioning module includes two second positioning marks 7, which are set between the two side beam positioning clamping modules 1 at both ends in the longitudinal direction for positioning the transverse center of the frame 03. It also includes a connecting line that connects the two second positioning marks 7.

[0116] As set up above, during assembly, the lateral centerline positioning module and the longitudinal centerline positioning module can effectively provide a basic center for the assembly of each component, ensuring the correctness of the assembly dimensions. Compared with the scribing positioning method, this can effectively ensure the assembly accuracy of the base frame. Meanwhile, since the distance between the two second positioning marks 7 is relatively long, connecting the two second positioning marks 7 with a connecting line allows for a more intuitive observation of the lateral alignment.

[0117] Among them, the first positioning mark 6 and the second positioning mark 7 should be fixed to the ground to ensure that the reference of the entire tooling remains unchanged.

[0118] like Figure 1 As shown in this embodiment, one of the second positioning marks 7 adopts the form of a ratchet tensioner, which can achieve self-locking and ensure that the connecting line is always in a taut state.

[0119] In this embodiment, the first positioning mark 6 includes a mark base and a flip positioning block connected to the mark base. The flip positioning block can rotate around the connection point with the mark base and switch between a working position and a retrieval position. In the working position, the flip positioning block faces the side beam positioning clamping module 1 and is supported on the upper side wall of the side beam 031. In the retrieval position, the flip positioning block faces away from the side beam positioning clamping module 1 to avoid interference with the side beam 031.

[0120] In this embodiment, the height range of the horizontal centerline positioning module and the vertical centerline positioning module is 1200mm-1400mm.

[0121] It should be noted that the aforementioned specific numerical limits are merely illustrative examples. In actual applications, they can be adjusted adaptively according to the specific dimensions of the vehicle chassis frame.

[0122] The foregoing has provided a detailed description of the composite material vehicle chassis frame assembly fixture provided by this invention. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are merely for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. A composite material car body underframe frame assembly tooling fixture, characterized by, The utility model provides a positioning and clamping module for side beam and bolster, which comprises two side beam positioning and clamping modules (1) and two bolster positioning and clamping modules (2), the two side beam positioning and clamping modules (1) are arranged in parallel and have a preset distance between them, the bolster positioning and clamping module (2) is arranged between the two side beam positioning and clamping modules (1) and is located at the longitudinal two ends of the side beam positioning and clamping module (1), and the bolster positioning and clamping module (2) is used for positioning and clamping a bolster (02) and a side beam (01). The side beam positioning and clamping module (1) is provided with a longitudinal abutting portion (11), a plurality of transverse abutting portions and a plurality of vertical clamping portions, the plurality of transverse abutting portions are distributed along the longitudinal direction, the plurality of vertical clamping portions are distributed along the longitudinal direction, in the installed state, the longitudinal abutting portion (11) abuts against the longitudinal end wall of a frame (03), the vertical clamping portions clamp the side beam (031) of the frame (03) in the vertical direction, and the transverse abutting portions abut against the outer side wall of the side beam (031). The utility model further comprises a plurality of transverse supporting portions (3), the transverse supporting portions (3) extend in the transverse direction, the two ends of the transverse supporting portions (3) are connected to the side beams (031) on both sides, the plurality of transverse supporting portions (3) are distributed along the longitudinal direction, and the transverse supporting portions (3) exert a supporting force or a pulling force in the transverse direction on the frame (03).

2. The composite vehicle body chassis frame assembly tooling of claim 1, wherein, The side beam positioning and clamping module (1) comprises a positioning and clamping seat (12), the positioning and clamping seat (12) comprises a clamping seat body (121), the top of the clamping seat body (121) is provided with a notch (121a), the bottom wall forming the notch (121a) is used for supporting the side beam (031), and the side wall forming the notch (121a) is the transverse abutting portion. The positioning and clamping seat (12) further comprises a pressing rod (122), the pressing rod (122) is installed on the clamping seat body (121) and located above the notch (121a), the installation position of the pressing rod (122) is adjustable in the vertical direction, and the bottom wall forming the notch (121a) and the pressing rod (122) are the vertical clamping portions.

3. The composite vehicle body chassis frame assembly tooling of claim 2, wherein, The side beam positioning and clamping module (1) further comprises a base (13), the longitudinal abutting portion (11) and the positioning and clamping seat (12) are both installed on the base (13), and the installation positions of the longitudinal abutting portion (11) and the positioning and clamping seat (12) are both adjustable in the longitudinal direction.

4. The composite vehicle body chassis frame assembly tooling of claim 3, wherein, The side beam positioning and clamping module (1) further comprises an adjusting component, the adjusting component comprises an adjusting plate (14), at least two adjusting blocks (15) and a connecting piece (16), the adjusting blocks (15) are connected to the bottom wall of the adjusting plate (14) through corresponding connecting pieces (16), at least one adjusting block (15) is arranged on each side of the adjusting plate (14) in the width direction, the inner ends of the adjusting blocks (15) are oppositely provided with notch grooves, the base (13) is provided with a connecting plate (132), the adjusting plate (14) is supported on the connecting plate (132), and the connecting plate (132) is inserted into the notch grooves, The relative positions of the adjusting plate (14) and the adjusting block (15) are adjustable to clamp or loosen the connecting plate (132), and the longitudinal abutting part (11) or the positioning clamping seat (12) is correspondingly installed on the adjusting plate (14).

5. The composite vehicle body chassis frame assembly tooling of any of claims 1-3, wherein, The distance between the two side beam positioning and clamping modules (1) is adjustable, and the two side beam positioning and clamping modules (1) can be fixed relative to each other when the distance is adjusted to have a preset distance, and the length of the transverse support part (3) is adjustable.

6. The composite vehicle body chassis frame assembly tooling of claim 5, wherein, The device further comprises a plurality of sets of propulsion devices (4), each of the side beam positioning and clamping modules (1) corresponds to one or more sets of the propulsion devices (4), and the plurality of sets of the propulsion devices (4) are distributed longitudinally, and the propulsion devices (4) are used to push the side beam positioning and clamping modules (1) to move transversely.

7. The composite vehicle body chassis frame assembly tooling of claim 5, wherein, The device further comprises a plurality of sets of guide components (5), each of the side beam positioning and clamping modules (1) corresponds to one or more sets of the guide components (5), the guide components (5) have a guide part (51) and a guide block (52) that cooperate with each other, the guide part (51) extends transversely, the guide block (52) can move along the extension direction of the guide part (51), and one of the guide part (51) and the guide block (52) is fixed to the ground, and the other is connected to the side beam positioning and clamping module (1).

8. The composite vehicle body chassis frame assembly tooling of any of claims 1-3, wherein, The traction pillow positioning and clamping module (2) comprises a traction beam positioning and clamping module (21) and a pillow beam positioning and clamping module (22), the traction beam positioning and clamping module (21) and the pillow beam positioning and clamping module (22) each comprise a support part (2a) and a pressing part (2b), the support part (2a) is used to support the traction beam (01) or the pillow beam (02), and the position of the pressing part (2b) is adjustable in the vertical direction and is used to press the top wall of the traction beam (01) or the pillow beam (02) or loosen the top wall of the traction beam (01) or the pillow beam (02).

9. The composite vehicle body chassis frame assembly tooling of claim 8, wherein, The device further comprises a traction mechanism corresponding to the traction beam positioning and clamping module (21), and the traction mechanism is used to drive the traction beam positioning and clamping module (21) to move transversely to adjust the distance between the two traction beam positioning and clamping modules (21).

10. The composite vehicle body chassis frame assembly tooling of claim 8, wherein, The support height of the traction beam positioning and clamping module (21) is adjustable, and the support height of the pillow beam positioning and clamping module (22) is adjustable.

11. The composite vehicle body chassis frame assembly tooling of any of claims 1-3, wherein, The device further comprises a transverse center line positioning module and a longitudinal center line positioning module, wherein: The transverse center line positioning module comprises two first positioning marks (6) arranged on the transverse outer sides of the two side beam positioning and clamping modules (1) and used to position the longitudinal center of the tooling; The longitudinal center line positioning module comprises two second positioning marks (7) arranged between the two side beam positioning and clamping modules (1) and at the longitudinal ends and used to position the transverse center of the tooling, and further comprises a connecting line that is tautly connected between the two second positioning marks (7).

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